perform updates before deletions when mutating tries

[ucwong]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 88.00000% with 3 lines in your changes are missing coverage. Please review.

Project coverage is 47.29%. Comparing base (5900818) to head (4fe9526).
Report is 36 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1955      +/-   ##
==========================================
+ Coverage   47.22%   47.29%   +0.07%     
==========================================
  Files         568      568              
  Lines       68845    68860      +15     
==========================================
+ Hits        32514    32570      +56     
+ Misses      33808    33765      -43     
- Partials     2523     2525       +2     

Files	Coverage Δ
core/state/statedb.go	61.91% <100.00%> (+0.67%)	⬆️
core/state/state_object.go	74.90% <70.00%> (+0.47%)	⬆️

... and 15 files with indirect coverage changes